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Before proceeding, identify the positive and negative leads coming off the battery. The negative lead is generally black and may be marked with a "-". The positive lead is often red and may be marked with a "+".

Never bridge the terminals on the battery with your hands or tools. Shorting the battery can severely injure you.

Look for corrosion on the battery terminals. Corrosion can be either white, grey, or blue and will generally be quite noticeable.

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When working with batteries, you must always remove the negative lead from the battery first, even if the corrosion is only on the positive lead.

Using a 10mm hex wrench, loosen the nut on the screw holding the negative terminal in place.

If the corrosion is preventing you from accessing the nut, use the other (open) end of the wrench or a wire brush to scrape some of the corrosion away.

Pull the negative battery cable off of the negative lead.

For this guide, we only show the removal and cleaning of the negative terminal. If you are going to clean the positive terminal, first remove the negative terminal and then remove the positive terminal. The process for removing both leads is the same; it is only the order that is important.

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Scrape the corrosion off of the battery terminal using a wire battery brush or some other scraping/brushing tool.

You may want to avoid getting the corrosion all over the inside of the engine bay. Sweeping the corrosion onto a paper plate or rag is a simple way to get the corrosion out of the engine bay without making a mess.

Just a note. On step 4 it says "Although the corrosion is not bad for the vehicle". That bluish white stuff is powdered Hydrochloric acid, its pretty terrible for your car. A better way of cleaning it off is liberal use of baking soda to neutralize the acid and make sure you wash ALL of it off when you're done.

Also that corrosion is a pretty good indicator of needing a new battery.

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Open a packet of battery terminal protector, and, using your finger, coat the (now assembled) battery terminal in a thin layer. Be sure to cover the outside of both the lead and post, but not to allow any protector between the post and lead.

You're right -- that's not a stock part that comes with the car. That's an Eibach strut bar that I purchased for my car a long, long time ago. It doesn't seem to be sold anymore, as I can't really find any more info about it.

These are all wonderful tips. Could you tell me How do I shut off the car alarm after replacing a battery on a 2001 Honda Accord EX SEDAN with VTECH Engine? I don't have a remote control for my vehicle.